Flood warning issued for the far north suburbs.

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Heavy rain is also washing out roads and flooding basements in Houghton County in Michigan's Upper Peninsula. (Image: CNN)

Flood warning issued for the far north suburbs.

Heavy rain is also washing out roads and flooding basements in Houghton County in Michigan's Upper Peninsula. (Image: CNN)

Radar showing heavy thunderstorms over north central Illinois. The storm cells are moving east at 20 mph.

The National Weather Service in Chicago has issued a

* Flash Flood Warning for…
Winnebago County in north central Illinois…
Boone County in north central Illinois…

* Until 1215 AM CDT Tuesday

* At 609 PM CDT, Doppler radar indicated thunderstorms producing
torrential rainfall across the warned area. these storms are
producing rainfall of up to two inches per hour. This heavy rain
will likely result in flash flooding this evening.